diff --git a/application/Timerecording/TimerecordingController.php b/application/Timerecording/TimerecordingController.php
index 8af4fe440..2922cbc60 100644
--- a/application/Timerecording/TimerecordingController.php
+++ b/application/Timerecording/TimerecordingController.php
@@ -211,21 +211,25 @@ class TimerecordingController extends mfBaseController
         $plushours = $employee[0]->plushours_now * 1.25;
         $overtime = $employee[0]->overtime_now * 1.5;
         $overtimesum = $plushours + $overtime;
-        if ($overtimesum < $isTime) {
-            if ($overtimesum < 0) {
-                $overtimesum = 0;
+        if (!$this->me->can('Fibu')):
+            if ($overtimesum < $isTime) {
+                if ($overtimesum < 0) {
+                    $overtimesum = 0;
+                }
+                $result['state'] = "error";
+                $result['error'] = "Maximal verfügbarer ZA: " . sprintf('%02dh:%02dm', floor($overtimesum / 3600), floor($overtimesum / 60 % 60)) . ".";
+                echo json_encode($result);
+                die();
             }
-            $result['state'] = "error";
-            $result['error'] = "Maximal verfügbarer ZA: " . sprintf('%02dh:%02dm', floor($overtimesum / 3600), floor($overtimesum / 60 % 60)) . ".";
-            echo json_encode($result);
-            die();
-        }
+        endif;
         if ($plushours >= $isTime) {
             $isTime = $isTime * 0.8;
             $return['hours'] = $isTime;
         } elseif ($plushours == 0) {
             $isTime = $isTime * 0.66666666666666666666666666666667;
             $return ['hours_overtime'] = $isTime;
+        } elseif ($plushours <= 0 && $overtime <= 0) {
+            $return['hours'] = $isTime;
         } else {
             $isTime25 = $plushours;
             $isTime50 = $isTime - $plushours;